Step aside, Hazel!Shailene Woodleyhas ditched her good girl side and taken on a more grown-up role in upcoming thriller White Bird in a Blizzard. In a new trailer released on Thursday, Aug. 21, the Fault in Our Stars actress has sex and experiments with her changing body alongside costar Thomas Jane.

"I was 17 when my body changed seemingly overnight," Woodley's character Kat says in the new trailer while getting down and dirty. "Flesh and blood and raging hormones… but then, one night that summer, everything changed."

The Gregg Araki film, which is set in the '80s, is based on Laura Kasischke's book by the same title about a teenage girl whose life is turned upside down after her mother disappears. After originally debuting earlier this year at Sundance, Indiewire promised, "You'll never look at Woodley the same way again."

Watch the intense trailer above for yourself! White Bird in a Blizzard hits theaters September 25.